Arbuscular nnycorrhizal fungi diversity in coffee (Coffea arabica) plantations on the Tacana volcano, Chiapas, Mexico
Por:
Bertolini, Vincenzo, Manuel Montano, Noe, Larissa Salazar-Ortuno, Blanca, Chimal-Sanchez, Eduardo, Varela, Lucia
Publicada:
1 ene 2020
Resumen:
Background and Aims: Coffee is generating important incomes in the
world, and particularly in Chiapas, Mexico. However, its production
could be increased using arbuscular mycorrhizal fungi (AMF), without the
need to substitute one type of coffee for another, as occurs in Mexico.
This study estimated the diversity of AMF morphospecies in Coffee
arabica plantations and examined its relationship with soil properties
on the Tacana volcano in the Soconusco region, Chiapas.
Methods: Rhizospheric soil samples were collected in five plantations
(Peloponeso, Montecristo, Chiquihuites, Finca Peru-Paris, and Barrio
Nuevo) of C. arabica. AMF spores were extracted by wet sieving and
decantation, and were mounted on slides with polyvinyl alcohol in
lactoglycerol, with or without Melzer's reagent. AMF morphospecies were
identified by morphology of the spores, and their abundance, richness,
and diversity were estimated and associated to some soil properties.
Key results: A total of 10 genera and 27 morphospecies of AMF were
recorded, and the abundance of AMF varied from 55 to 198 spores per 100
g of dry soil. Ambispora reticulate was a new record for Chiapas and
Mexico. Acaulospora had the highest frequency and species richness.
Chiquihuites had especially higher richness and diversity of AMF
morphospecies with high abundances presumably associated to low levels
of organic matter and PO4-3 in the soil. In the other plantations,
richness and diversity of AMF morphospecies depended on soil acidity as
driver of PO4-3 availability. Coffee arabica and C. canephora had
similar richness, but different composition of AMF, comparing these
results with a study on C. canephora.
Conclusions: Coffee arabica favors the AMF richness compared to C.
canephora. The PO4-3 availability and soil acidity together could
regulate AMF diversity in C. arabica, favoring specific AMF in theses
edaphic conditions. Acaulospora species and those genera only registered
in C. arabica could be used as biofertilizers for its cultivation in
Soconusco, Chiapas, Mexico.
Filiaciones:
Bertolini, Vincenzo:
El Colegio Frontera Sur, Carretera antiguo aeropuerto km 2 5, Tapachula 30700, Mexico
Manuel Montano, Noe:
Univ Autonoma Metropolitana Iztapalapa, Div Ciencias Biol & Salud, Dept Biol, Mexico City 09340, DF, Mexico
Larissa Salazar-Ortuno, Blanca:
Univ Autonoma Metropolitana Iztapalapa, Div Ciencias Biol & Salud, Dept Biol, Mexico City 09340, DF, Mexico
Chimal-Sanchez, Eduardo:
Univ Autonoma Metropolitana Iztapalapa, Div Ciencias Biol & Salud, Dept Biol, Mexico City 09340, DF, Mexico
Univ Nacl Autonoma Mexico, Fac Estudios Super Zaragoza, Carrera Biol, Mexico City 09230, DF, Mexico
Varela, Lucia:
Univ Autonoma Metropolitana Iztapalapa, Div Ciencias Biol & Salud, Dept Biol, Mexico City 09340, DF, Mexico
Invest Independiente, Av Paseos Bosque 156, Mexico City 53297, DF, Mexico
Green Submitted, gold
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